Amiga: route non-menu messages from DoMenuScroll to ProcessMessage

DoMenuScroll dropped IDCMP messages for non-owner windows -- so a
resize of WIN_INVEN or close-gadget on WIN_OVER during a menu never
reached the game state.  Forward those to ProcessMessage;
VANILLAKEY/RAWKEY stay with the menu.

sys/amiga/amiwind.c

@@ -17,7 +17,7 @@ static struct Message *GetFMsg(struct MsgPort *);
 #endif
 
 static int BufferGetchar(void);
-static void ProcessMessage(struct IntuiMessage *message);
+void ProcessMessage(struct IntuiMessage *message);
 
 #define BufferQueueChar(ch) (KbdBuffer[KbdBuffered++] = (ch))
 
@@ -354,7 +354,7 @@ ConvertKey(struct IntuiMessage *message)
  *  ahead of input demands, when the user types ahead.
  */
 
-static void
+void
 ProcessMessage(struct IntuiMessage *message)
 {
     int c;

sys/amiga/winamenu.c

@@ -463,11 +463,13 @@ DoMenuScroll(int win, int blocking, int how, menu_item **retmip)
             mx = imsg->MouseX;
             my = imsg->MouseY;
 
-            /* Only do our window or VANILLAKEY from other windows */
-
+            /* Only do our window or VANILLAKEY from other windows.
+             * Background events (NEWSIZE on inventory, CLOSEWINDOW
+             * on overview, etc.) get routed to the main dispatcher
+             * so the game stays in sync.  ProcessMessage ReplyMsgs. */
             if (imsg->IDCMPWindow != w && class != VANILLAKEY
                 && class != RAWKEY) {
-                ReplyMsg((struct Message *) imsg);
+                ProcessMessage(imsg);
                 continue;
             }
 

sys/amiga/winproto.h

@@ -53,6 +53,7 @@ void SetPropInfo(struct Window *win, struct Gadget *gad, long vis, long total,
 struct Window *OpenShWindow(struct NewWindow *nw);
 void CloseShWindow(struct Window *win);
 int ConvertKey(struct IntuiMessage *message);
+void ProcessMessage(struct IntuiMessage *message);
 int kbhit(void);
 int amikbhit(void);
 int WindowGetchar(void);